V-Lab
PowerBank Corp GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
73.96%
increased by 0.33%
1 Week
82.10%
increased by 8.47%
1 Month
99.28%
increased by 25.65%
Analysis last updated: Friday, September 11, 2026 at 11:17 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 8, 2024 to Sep 11, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 4.4518 | 1.67* |
| αARCH | 0.3382 | 1.49 |
| βGARCH | 0.6866 | 5.23*** |
| γleverage | -0.2081 | -0.95 |
0.921
Persistence8d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 4.4518 | 1.67* |
α ARCH Response to squared shocks | 0.3382 | 1.49 |
β GARCH Volatility persistence | 0.6866 | 5.23*** |
γ leverage Additional response to negative shocks | -0.2081 | -0.95 |
Persistence:
0.921
Half-life:
8 days
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